different types of hiv virus
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HIV-1 and HIV-2 There are two major types of the human immunodeficiency virus. HIV-1, which was discovered first, is the most widespread type worldwide. HIV-2 is more than 55% genetically different from HIV-1.IV-1 and HIV-2. 1  HIV-1 and HIV-2 are the two main types of HIV. 2  HIV-1 is the most widespread type worldwide. 3  Large genetic differences between HIV-1 and HIV-2 mean that tests keyed to one will not reliably detect the other.
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Hepatitis (Viral Hepatitis, A, B, C, D, E, G) The most common hepatitis viruses are types A, B, and C. Reference to the hepatitis viruses often occurs in an abbreviated form (for example, HAV, HBV, HCV represent hepatitis viruses A, B, and C, respectively.) The focus of this article is on these viruses that cause the majority of human viral hepatitis. Viruses that primarily attack the liver are called hepatitis viruses. 2  There are several types of hepatitis viruses including types A, B, C, D, E, and possibly G. Types A, B, and C are the most common. 3  All hepatitis viruses can cause acute hepatitis. 4  Viral hepatitis types B and C can cause chronic hepatitis.
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New, aggressive strain of HIV discovered in Cuba There are currently 35 million people worldwide living with HIV/AIDS, according to the most recent data from the World Health Organization. Scientists have identified more than 60 different strains of the HIV 1 virus, with each type typically found predominantly in a specific region of the world.
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How Does Jelly Belly Create Its Weird Flavors? Ditto for the company’s BeanBoozled line, which features lookalike jelly beans in flavors like buttered popcorn and rotten egg, licorice and skunk spray, peach and barf, and chocolate pudding and canned dog food.(Part of the fun of taking the BeanBoozled Challenge is finding out which one you’ve gotten!).f you’re a Harry Potter fan, you’ve no doubt received a box of Bertie Bott’s Every Flavour Beans in your Easter basket at least once. As its name suggests, there are beans of many flavors in the boxes—and not just nice ones.
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HIV and AIDS: an Overview View All. HIV is the acronym for the human immunodeficiency virus. It is a type of virus classified by scientists as a retrovirus, which causes disease by infecting and killing blood cells (known as CD4 T-cells) central to the body's immune system.
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- Of the two types of human immunodeficiency virus (HIV), HIV-1 accounts for most HIV infections worldwide and, untreated, causes acquired immunodeficiency syndrome (AIDS). HIV-2 is rarely reported in the United States, largely confined to persons from West Africa, and less likely to cause AIDS.f the two types of human immunodeficiency virus (HIV), HIV-1 accounts for most HIV infections worldwide and, untreated, causes acquired immunodeficiency syndrome (AIDS). HIV-2 is rarely reported in the United States, largely confined to persons from West Africa, and less likely to cause AIDS.
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- hpv is a different virus than hiv and hsv herpes hpv is so common that nearly all sexually active men and women get it at some point in their lives there are many different types of hpvsome types can cause health problems including genital warts and cancerspv is a different virus than hiv and hsv herpes hpv is so common that nearly all sexually active men and women get it at some point in their lives there are many different types of hpv
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What Are HIV and AIDS? Stages of HIV Infection. Without treatment, HIV advances in stages, overwhelming your immune system and getting worse over time. The three stages of HIV infection are: (1) acute HIV infection, (2) clinical latency, and (3) AIDS (acquired immunodeficiency syndrome).
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- The window period varies from person to person and also depends upon the type of HIV test. 1  Most HIV tests are antibody tests. 2  A combination, or fourth-generation, test looks for both HIV antibodies and antigens. 3  A nucleic acid test (NAT) looks for HIV in the blood.
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- The human T-cell lymphotropic viruses type I and type II (HTLV-I/II) are closely related but distinct retroviruses that can infect humans. These viruses have nothing to do with HIV or AIDS.HTLV-I and HTLV-II viruses infect specific cells in the body known as lymphocytes, a type of white blood cell. White blood cells are involved in the immune response and help the body fight infection.he human T-cell lymphotropic viruses type I and type II (HTLV-I/II) are closely related but distinct retroviruses that can infect humans. These viruses have nothing to do with HIV or AIDS.
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Origin of HIV & AIDS There are four main groups of HIV strains (M, N O and P), each with a slightly different genetic make-up. This supports the hunter theory because every time SIV passed from a chimpanzee to a human, it would have developed in a slightly different way within the human body, and produced a slightly different strain.
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Other Retroviruses That May Cause Human Illness Other Retroviruses That May Cause Human Illness. Retroviruses are a family of viruses that are grouped together based on how they are structured and how they replicate within a host. Besides human immunodeficiency virus (HIV), the virus that causes AIDS, there a two other retroviruses that can cause human illness. One is called human T-lymphotropic virus type 1 (HTLV-1) and the other is called human T-lymphotropic virus type 2 (HTLV-II). Both of these viruses are transmitted between people through sexual contact, infected blood or tissue exposure, or during pregnancy or childbirth from an infected mother to her child.
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History of HIV/AIDS However, the types of apes, shown to carry the SIV virus, are different in South America. The primary point of entry, according to researchers, is somewhere in the jungles of Argentina or Brazil. An SIV strain, closely related to HIV, was interspersed within a certain clade of primates.
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- The most common type of viral disease is the common cold, which is caused by a viral infection of the upper respiratory tract (nose and throat). Other common viral diseases include: Chickenpox.Flu (influenza).Herpes. Human immunodeficiency virus (HIV/AIDS). Human papillomavirus (HPV).Infectious mononucleosis.he most common type of viral disease is the common cold, which is caused by a viral infection of the upper respiratory tract (nose and throat). Other common viral diseases include: Chickenpox. Flu (influenza). Herpes. Human immunodeficiency virus (HIV/AIDS). Human papillomavirus (HPV). Infectious mononucleosis.
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Structural Biochemistry/Carbohydrates/Virus There are several different types of viruses, including DNA, RNA, and retroviruses. DNA viruses usually replicate by taking over the cell's DNA, whereas RNA viruses tend to replicate in the cytoplasm. Retroviruses transcribe their DNA into host DNA via reverse transcription- an example of this is HIV. The body has several defense mechanisms against viruses. The body's first line of defense is the innate immune response, which is non-specific and defends the body against a variety of threats.
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Causes of HIV/AIDS Embedded in the viral envelope are proteins from the host cell, as well as 72 copies (on average) of a complex HIV protein (frequently called spikes) that protrudes through the surface of the virus particle (virion).mbedded in the viral envelope are proteins from the host cell, as well as 72 copies (on average) of a complex HIV protein (frequently called spikes) that protrudes through the surface of the virus particle (virion).
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- HIV is an abbreviation for Human Immunodeficiency Virus. There are two main forms of HIV: HIV-1 and HIV-2. HIV-1 was discovered by Luc Montagnier and his associates at the Institute Pasteur in Paris in 1983.ince its discovery in 1983, no new modes of transmission of HIV have been discovered. HIV cannot be transmitted by touch, by insect vectors, or across fomites. Currently, blood supplies are screened for hepatitis, HIV, and other infections.
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HIV Testing There are three main types of HIV tests: antibody tests, combination tests (antibody/antigen tests), and nucleic acid tests (NATs). How soon each test can detect HIV infection differs because each test has a different window period.
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human immunodeficiency virus human immunodeficiency virus (HIV) either of two species of lentiviruses that cause acquired immunodeficiency syndrome (AIDS). HIV-1 is found around the world and HIV-2 is found primarily in West Africa.uman immunodeficiency virus (HIV). A transmissible retrovirus that causes AIDS in humans. Two forms of HIV are now recognized: HIV-1, which causes most cases of AIDS in Europe, North and South America, and most parts of Africa; and HIV-2, which is chiefly found in West African patients.
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- diseases similar to HIV. ...The HTLV-I virus and HIV are transmitted the same way, and infect the same cells of the body. However HTLV-I does not cause AIDS ! Instead, HTLV-I causes a rare form of leukemia and also causes specific types of neurological problems. Like HIV ,...
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HIV A retrovirus of the genus Lentivirus that causes AIDS by infecting helper T cells of the immune system. The most common serotype, HIV-1, is distributed worldwide, while HIV-2 is primarily confined to West Africa. Origin of HIV. h(uman) i(mmunodeficiency) v(irus).
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What Are the 5 Different Types of Viral Hepatitis? Answer: There are 5 types of hepatitis-A, B, C, D, and E-each caused by a different hepatitis virus. Hepatitis A is caused by eating food and drinking water infected with a virus called HAV. It can also be caused by anal-oral contact during sex.
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- Of these, three of the most dangerous are:  Human immunodeficiency virus (HIV)  Hepatitis B virus (HBV)  Hepatitis C virus (HCV) Read on to learn more about these viruses and the diseases they cause. Understanding HIV (human immunodeficiency Virus) HIV causes AIDS (acquired immune deficiency syndrome).
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HIV Infection with HIV occurs by the transfer of blood, semen, vaginal fluid, pre-ejaculate, or breast milk. Within these bodily fluids, HIV is present as both free virus particles and virus within infected immune cells.HIV infects vital cells in the human immune system such as helper T cells (specifically CD4 + T cells), macrophages, and dendritic cells.nfection with HIV occurs by the transfer of blood, semen, vaginal fluid, pre-ejaculate, or breast milk. Within these bodily fluids, HIV is present as both free virus particles and virus within infected immune cells.
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- Types of HIV/AIDS Antiretroviral Drugs. There are six major types of drugs used to treat HIV/AIDS. Called antiretrovirals because they act against the retrovirus HIV, these drugs are grouped by how they interfere with steps in HIV replication (PDF).
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11. DNA and RNA Viruses and the Diseases They Cause A type of virus that has RNA instead of DNA as its genetic material. It uses an enzyme called reverse transcriptase to become part of the host cells' DNA. This allows many copies of the virus to be made in the host cells. The virus that causes AIDS, the human immunodeficiency virus (HIV), is a type of retrovirus.t uses an enzyme called reverse transcriptase to become part of the host cells' DNA. This allows many copies of the virus to be made in the host cells. The virus that causes AIDS, the human immunodeficiency virus (HIV), is a type of retrovirus.